ath9k: Fix PTK/GTK handshake timeout

Some APs don't start BA negotiation with the client before it is done
with the key handshake in WPA/RSN. With those APs, key handshake times
out if EAPOL frames are sent after addba request. So defer the BA negotiation
until we are done with tx/rx of all EAPOL frames.
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath9k/rc.c

@@ -1535,7 +1535,8 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
 			 tx_info_priv->tx.ts_longretry);
 
 	/* Check if aggregation has to be enabled for this tid */
-	if (conf_is_ht(&sc->hw->conf)) {
+	if (conf_is_ht(&sc->hw->conf) &&
+	    !(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
 		if (ieee80211_is_data_qos(fc)) {
 			u8 *qc, tid;
 			struct ath_node *an;